The rule of thumb is that the language abbreviation always appears at the very end of the article, that is the right link is supposed to be

Development/Tutorials/Debugging_(de)

So be sure you adapt the links in the article to use absolute paths everywhere (i.e. no leading slash '/' in the wiki links).

Quality Assurance

The system administrators and contributors try to keep a close watch at the content, but with foreign languages this is sometimes getting hard. It would be good, if you add yourself to the Watch list (just click Watch). That way you will be noticed by mail whenever the article was changed. This will help to keep the wiki clean of e.g. spam, which unfortunately already happened.